Finding the Fourth Proportional to 28,591,711.94, 39,456,867.20 and 15,538,971.53
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Solution
The fourth proportional to 28,591,711.94, 39,456,867.20 and 15,538,971.53 is: 21,443,946.32
Step by Step Solution
- Step 1: Write the proportion equation
28,591,711.94 : 39,456,867.20 = 15,538,971.53 : x - Step 2: Convert to fraction form
28,591,711.94/39,456,867.20 = 15,538,971.53/x - Step 3: Cross multiply
28,591,711.94x = 39,456,867.20 × 15,538,971.53 - Step 4: Simplify right side
28,591,711.94x = 613,119,135,808,811.62 - Step 5: Solve for x
x = 613,119,135,808,811.62/28,591,711.94 - Step 6: Final answer
x = 21,443,946.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.